The desert sculptor

No, it's not a mirage. The Solar-Sinter is a
light-powered 3D printere that uses solar radiation to produce (for the time
being) simple products such as tiles and bowls from something we
have in abundance: sand.

Earlier this year, 28-year-old Royal College of Art
design student Markus Kayser took the Solar-Sinter to the Siwa
Oasis in Egypt. The machine focuses solar rays on to a box of sand.
The result is a 3D printer with an endless supply of materials --
and no energy bills.